Tool for making accumulator-plates.



" Patented 00f. "3,1899.

pm. 634,469. v i w. MAJERT.

TOOL FOR mm 6 ,ACCUMULATOB PLATES.

(A li uion filed 1m. 2a, 1897.)

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UNITED STATES PATENT OFFICE.

WILHELM MAJERT, on BERLIN, GERMANY.

TOOL FOR MAKING AGCUMULATOR-FLATES.

SP EGIFIGATION forming part of Letters Patent No. 634,469, dated October 10, 1899.

To all whom it may concern:

Be it known that I, VVILHELM- MAJERT, a subject of the Emperor of Germany, residing at Berlin, Germany, have invented certain new and useful Improvements in Tools for Making Accumulator-Plates, of which the fol-' lowing is a specification.

My invention is a tool .for making accumulator-plates of a certain form in which the exposed surface of the plate is enlarged or in-- cumulator-plates in which the grooves run differently. Fig. 6 is a side view of the tool. Fig. 7 is a view of the tool, looking from the opposite side of Fig. 6. A e

The tool comprises a bar Z2, having two working edges or points 0 d. The purpose of the tool is to out a strip of material J from the face of the plate, leaving it, however, attached at one edge e, and then erecting this strip to form a rib, such as is shown in Fig. 1, this figure illustrating a number of the-ribs erected parallel with each other and with grooves between them. The edge a operates in advance of the edge (1 both laterally and longitudinally.

The tool cuts with its edge 0 into the material of the plate and detaches from it the strip f, which still adheres to it at its base e.

The slanting edge (I behind the edge 0 then engages the under side of the detached strip in such a manner that the projecting edge en'- ters first under the strip. As the surface bestrip is erected by it. These twoedges c and at work simultaneously, so that the edge ccompletes the cut with one movement, While in the same movement the edge at erects the strip which was cut by the preceding movement of the tool. The edges 0 and d work at difierent places,though connectedly,during their movement. tionthat is, it detaches the strip from the plate. The other edge completes the Work by erecting the detached strip so as to form a rib.

The tool may have only one edge with one bending-surface.

I claim 1 l. A tool for forming ribs on accumulator-'- plates having an edge 0 for cutting a strip from the plate, and asecond cutting edge dfor erecting the same, said edges being relatively located so that the edge d erects the strip previously' cut by the edge a and while the said edge 0 is cutting a new strip, substantially as described. 2. A tool for forming ribs on accumulator plates having an edge e for cutting a strip fromthe plate, and a second cutting edge (Z Witnesses: r

HENRY HASPER, W. HAUPT.

The one edge gives a preliminary'achind the edge d is wedge-shaped, the detached 

